1
vote
0answers
26 views

How to make BIND return old cached enties if all forwarders are failed?

I have a local forwarding BIND server installed at localhost. In its configuration there is a couple of forwarders: options { ... forwarders { 1.2.3.4; 5.6.7.8; }; ... }; Servers which are pointed ...
0
votes
2answers
49 views

website shows incorrect server in some browsers after dns change

Ive recently transferred a domain to a new registrar and pointed it to a new server in the A records. Some computers show the correct server but scarily some of them show the old one. I don't think ...
0
votes
0answers
48 views

How do I figure what process is caching DNS

There seems to be some form of DNS caching on my machine as my networking scripts continue to give gaierror even after a broken connection has been reinstated. There is no nscd installed and dnsmasq ...
5
votes
2answers
168 views

Cache updates when migrating DNS from one provider to another

This may be a Windows DNS specific question or a general DNS best practice question - I'm not sure! We migrated our 3rd party DNS provision from provider A to provider B. I noticed that our internal ...
0
votes
3answers
239 views

Caching DNS. How does it choose what DNS server to query?

I have a local caching dns server (named). Say I want to resolve a blizzard.com domain. How does my local DNS manage to find the correct server to query for this domain? Does it have a list of other ...
1
vote
1answer
314 views

Windows samba share: drop cache after DNS change

Suppose I have following entry in hosts.cfg file: 1.2.3.4 test # foo machine I start script that every second call ping test and cat \\test\share\machine-name.txt Script output: IP: 1.2.3.4; ...
0
votes
2answers
40 views

Find caching DNS server?

Is there any way to find out which servers, on the way on DNS routing, are caching records, and for how long? I'm on a iMac with Leopard. The reason I ask this, is that I've made some DNS changes to ...
1
vote
1answer
956 views

Disable DNS Caching PHP

I need to get the latest A records of a DNS in a script. The script is doing some monitoring operations. The Default TTL of DNS record is 5 minutes, but the monitoring script is running every minute. ...
0
votes
1answer
192 views

Is dnsmasq a cache?

I have doubt whether dnsmasq is a DNS server or just a cache for DNS. I see in some of the linux machines that the dnsmasq is installed. Is it installed in default? Thanks in advance.
0
votes
2answers
121 views

Dns with parallel resolution

I'm looking for a simple caching (can be caching-only) DNS server, which can do parallel resolving on its own. Is there something like that available? Alternatively I know there's the c-ares library, ...
3
votes
4answers
3k views

Caching DNS server (bind9.2) CPU usage is so so so high

I have a caching-only dns server which get ~3k queries per second. Here is specs: Xeon dual-core 2,8GHz 4GB of RAM Centos 5x (kernel 2.6.18-164.15.1.el5PAE) bind 9.4.2 rndc status: recursive ...